【摘要】 采用⁶⁰钴-γ射线100-800Gy 对苦荞的4个品种进行辐射处理,处理结果表明,随着剂量的增加苦荞的幼苗高度和根系生长逐渐受到抑制。辐射处理在700-800Gy 内苦荞的幼苗生长受到显著的影响,而100-200Gy 的处理对苦荞的影响不大。辐射种子能够引起苦荞多个性状发生变异,但在100-200Gy 突变频率很低,而在300-600Gy 内,随着剂量的增加突变频率则逐渐增加。根据处理结果,最适宜的剂量是300-600Gy。辐射处理导致苦荞黄酮含量发生改变,并可以从中选择到高黄酮含量的突变型。此外,通过选择还获得了高抗落粒性、较高黄酮含量和适宜生育期的突变型"5-2-62"。更多还原

【Abstract】 We radiated 4specieses of tartary buckwheat by cobalt-γ Ray.Results have shown that with the increase of dosages,their heights and root systems were restrained.Radiation has great effect on their growth in 700-800Gy,but little in 100-200Gy.Their properties and conditions change after radiation.The rate of change decreased in 100-200Gy,but increased with the dosages of 300-600Gy.So the appropriate dosages are 300-600Gy.The flavonoids in tartary buckwheat may be changed by radiation.We may get an improved buckwheat variety with high flavonoid as well as the high anti-fall grain—"5-2-62".更多还原